Ordo II. 



A c a n t h o c e p h a 1 a. 



Corpus teretiusculum^ utrieulare^elasticwn. Pro-- 

 boscis seriatim uncinata retractilis. Individua 

 alia mascula^ alia feminea^ 



Genus XII. Echinorhynchus. 

 (Character Ordinis etiani ille Generis uuici,) 



A* Collo corporeque iiLerniibiiSt 



o, Collo brev issimo vel nullo. 



«. Proboscide subglobosai, 



!♦ Echinorhynchus Glij^as, Goeze. 

 Ech. Proboscide subglobosa, coUo vaglnato, cor- 

 pore longissitno, cylindrico, retrorsum decre- 

 scente. 

 Ent. I. p. 251. n. r. Mant. n. i. Ent. Gigas* 

 Hab. in intestinis tenuibus Suis domesbicae et 

 ferae^ vulgaris. 

 2. Echinorhynchus Spiriila. Olfers. 



Ech. Proboscide subglobosa, collo subnullo, 

 corpore utrinque attenuato, postice crassiori 

 incurvo, 

 Mant, n. 3t Ech* Spirula» 



